Usher, Abbott Payson <br/><br/>
A history of mechanical inventions / 
Abbott Payson Usher 
 - Boston :  Beacon press,  c1959. 
 - X, 450 p. ;  ill., figs., tabs. ;  23 cm. 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Mechanical inventions
<br/><br/><label>LC Class. No.: </label>T15  / .U8 1959